Clean-out frame and cap therefor



Aug. 5. 1924. I 1,503,6 1?

C. C. FRAUTZ' ET AL CLEAN-OUT FRAME AND CAP THEREFOR Filed March 19, 1923 2 Sheets-Sheet 1 INVENTOR- Chal'les Clark 'F'mub Hard/cl F Tnn y 1,503,647 c. c. FRAUTZ'ET AL CLEAN-OUT FRAME AND GAP THEREFOR Filed March 19. 1923 '2 Sheets-Sheet 2 lNl Em'oi. Charles lank Tr uT) Mar o/d T: Ermey Patented Aug. 5, 1924,

EMF

CHARLES C. FRAUTZ AND HAROLD PENNEY, 01E GENEVA, NEW'YORK, ASSIGNOB$ T0 -PHILLIPS & CLARK STOVE GO. TNG, OF GENEVA, NEW YORK, A CORPORATION OF NEW YORK.

CLEAN-OUT FRAME AND GAP THEREFOR.

Application filed March 19, 1923. Serial No. 625,963.

To all whom it may concern:

Be it known that we, CHARLES CLARK FRAUTZ and HAROLD F. PENNEY, citizens of the United States, residing at Geneva, in the county of Ontario and State of New York, have invented certain new and useful Improvementsin Clean-Out Frames and Caps Therefor, of which the following is aspeci fication.

The object of this invention is to provide the clean out opening of a hot air furnace with a new and improved type offrame and cap with which this opening can beisealed so that the gases from the fire cannot escape into the hot air risers of the furnace.

Another object ofthis invention is to so construct this frame and cap that the cap will not corrode as is the case with sheet metal caps, but can readily be removed from the clean out opening and put back in place again without injury-t0 the cap.

These and other objects of this invention will be fully illustrated in the drawings, described inthe specification and pointed out in theclaims at the end thereof.

In the accompanying drawings:

Figure 1 is a front elevation of the clean out frame and cap.

Figure 2 is a view partly in section ofthe clean out frame and cap, the section being taken on the line 2 2" of Figure 1.

Figure 3 is a perspective view of the clean out frame and cap as they will appear when viewed from the rear and partly separated.

Figure 4 is a detail perspective view of a section of a radiator of a hotairv furnace showing the clean out openingto which the clean out frame is mounted ready to have the cap attached thereto.

posed to the action of the gases or products of combustion and after a period of time they corrode due to this exposure. In removing such a cap for the purpose of cleaning out the soot collected in the radiator, it is usually broken or badly bent due to its cor roded condition'and weakened so that a new cap must be provided in its place. Fu1'ther a perfect seal for the clean out opening of the radiator. The parts are made out of cast 1ron and will resist the action of the gases as well as any other part of the furnace that is exposed to them.

As illustrated in the drawing, the clean out frame is attached to the end of the clean out duct 1 of the hot air radiator 2 of a furnace, and comprises a cast iron ring 3 having a short sleeve extension 4 of enlarged diameter formed at the back thereof. At the top of this sleeve extension 4- is formed the boss 5 having a threaded opening 6 provided therein into which a suitable set screw 7 may be threaded to clamp the upper end of'the sleeve 4 of the clean out frame in place on the outer end of the clean out duct 1. For this purpose the short sleeve extension 4; is made with an inside diameter slightly larger than the outside diameter of the clean out duct 1 of the radiator so that the sleeve can be readily slipped over this duct and be clamped in place thereon by means of the set screw 7.

The bottom of the clean out frame is anchored to the top of the shell 8 surrounding the feed door opening of the combustion domeia'nd leading to the fire pot, all constituting part of the shell of the furnace. For this purpose a pair of sliding brackets 9 and 10 are provided. Of these brackets, the bracket indicated by reference numeral 9 is clamped to the under side of the pocket 11 formed in the short sleeve extension 4 of the clean out frame as indicated in Figures 1, 2 and 3. This pocket is adapted to hold either the nut Or head of the clamping bolt 12 that is inserted into the slot 13 in the bottom of the pocket 11. The clamping bolt 12 passes through the flange 14 formed at the top of the bracket 9 and is adapted to clamp this flange and with it the bracket 9 in place on the underside of the clean out frame.

The bracket 10 in turn is clamped to the shell 8 as indicated in Figures 4 and 5, a suitable bolt hole being provided in this shell into which the bolt 15 may be threaded or otherwise fastened to clamp the flange 16 of the bracket 10 rigidly to the top of the shell 8. A sliding adjustment between the two brackets 9 and 10 takes care of variations in the dimension between the top of the shell 8 and the bottom of the clean out frame. This adjustment is made possible by the slot 17 provided in the bracket 9. The bolt 18 carried in the bracket 10 passes through this slot and can slide up or down therein so that it can be fastened to hold the two brackets in thedesired position with relation to each other. r

' On the inside of the ring 3 of the clean out frame at two diametrically opposite points are provided a pair of cam lugs 20 .and 21. The cam surface of these lugs faces the rear of the clean out frame and the dogs 22. and 23 of the cap 24 are adapted to engage this cam surface. As illustrated, the cap 24 comprises a slightly dished shell having the dogs 22 and 23 projecting rearwardly from it at diametrically opposite points on the rear of the shell. The rear edge 25 of the cap 24 when placed against the front of the clean out frame makes Contact with the front edge 26 of the clean out frame and by giving the cap a turn so as to make the dogs 22 and 23 engage the rear or cam surface of the cams 20 and 21 and slide up thereon, the two edges are tightly drawn against each other and form a gas tight joint between them. For this reason the outer surface of the two edges 25 and 26 are finished to provide smooth surfaces that can be tightly clamped together.

The cap 24 is turned to be locked to the frame as above pointed out by means of the same crank handle that is used to turn the grate bars of the furnace. This handle is slipped over the triangular lug 27 provided on the outsid of the cap 24 in the manner in which it is slipped over the end or ends of] the grate bars. A short turn of the handle thus turns the cap and locates its dogs 22 and 23 at the rear of the lugs 20 and 21 so that a further rotation makes the hook shaped ends of the dogs ride up on the cam surfaces of the lugs 20 and 21 which operate 'to draw the'edge of the cap against the edge of the frame until the two edges are tightly clamped together.

In'theouter shell of the furnace the door '28'is placed in front of the cap 24 which which the cap can be removed when the radiator is to be cleaned out.

We claim:

1. In a clean out frame and cap therefor for furnaces, the combination of a furnace shell, a ring adapted to be placed in front of the clean out duct of the radiator ofsaid furnace shell, a pair of brackets, one of said brackets being anchored to the bottom of said ring and the other of said brackets being anchored to said furnace shell, means for adjustably clamping the free ends of said pair of brackets together to hold said ring in place on the end of saidclean out duct, a cap for said ring and means for clamping said cap to said ring. 5 1

2. In a clean out frame and cap therefor for furnaces, the combination 'ofa furnace shell, a ring, a sleeve extension at the rear of said ring, a pair ofcamlugs located at diametrically opposite points. within said ring, a cap, a pair of dogs located'at diametrically opposite points at the back of said cap, said cap being adapted to be placed against said ring and turned to engage said dogs behind said cam lugs and draw said cap against said ring to close the opening formed by said ring, a pocket formed inthe bottom of said sleeve extension, a. bolt adapted to be anchored in, said pocket, a bracket fastened to the under side of said sleeve extension by meansof said bolt, a sec- 0nd bracket being adjustably clamped to said first bracket said secondbracket being anchored to the shell of the furnace.

3. In a cleanout frame and cap therefor for furnaces, the combinationrof a furnaceshell having a-clean out duct, a ring, a sleeve sion, a bolt adapted to be anchored in said pocket, a bracket fastened to the under side of said sleeve extension bymeans of said.

bolt, a second bracket being adjustably clamped to said firstbracket said second bracket being anchored to the'shell of the furnace, means for clamping the top of said sleeve extension to the endof the cleanout duct of the furnace shell.

4. In a clean out frame andcap therefor 1 for furnaces the' combination of a furnace shell having a cleanout duct, a ring adapted to be placed against the end of said clean out duct, a pocket formed on the periphery of said ring, a bolt 'anchored'in said pocket,

a bracket clamped: to said ring by said bolt,

said bracket holding said ring on said clean out duct with relation to said furnace shell.

5. In a clean out frame and cap therefor for furnaces the combination of a furnace shell having a clean out duct, a ring, a cap adapted to close the opening in said ring, said ring being adapted to telescope over the end of said clean out duct, a set screw threaded into the periphery and projecting through said ring to engage the clean out duct and clamp said ring to said clean out duct, a pocket formed on the inside of said ring, a bolt anchored in said pocket, a bracket adapted to be clamped to the outside of said ring by means of said bolt, said bracket connecting said ring to said furnace shell, means for increasing or decreasing the length of said bracket.

In testimony whereof We aifix our signatures.

CHARLES C. FRAUTZ. HAROLD F. PENNEY. 

